Fairfax County police are investigating the death of an 85-year-old woman who died during a police transport on Tuesday.

According to police, officers were called to Inova Fairfax Hospital emergency room shortly before 3:30 a.m. April 24, for a report that Mary Jean Martin of the 11130 block of Stuart Mill Road in Oakton “was acting irrationally.”

Police said that while being examined, Martin exhibited mental confusion and family members — who called police — were concerned for her safety.

The decision was made to transport her to Woodburn Mental Health, 3340 Woodburn Road, for further evaluation. Martin was placed in the police cruiser unfettered and experienced medical distress during the drive, police said.

Officers immediately summoned rescue personnel and began CPR, according to police.

Martin was transported by ambulance back to Inova Fairfax Hospital, where she was pronounced dead.

The investigation is ongoing, and the Office of the Medical Examiner will determine the cause of death.

Herndon man charged with assaulting officers

A Herndon man has been charged with 13 offenses, including six counts of felony assault on a police officer, after police say he assaulted an officer, stole a police car and later swung a shovel at additional law enforcement officers.

Virginia State Police said Dexter Gibson, 37, was walking along Interstate 66 in the eastbound lanes near the 46-mile marker in Prince William County shortly before noon Thursday when a state trooper and an Arlington County police officer pulled up to offer assistance.

Upon being approached, police said Gibson became combative and began banging on the trooper's patrol car. As the trooper and officer tried to take Gibson into custody, police said he struck the Arlington officer in the face and then fled the scene in that officer's vehicle. The officer was transported to a nearby hospital for treatment of non-life-threatening injuries.

According to state police, the trooper pursued Gibson off I-66 and onto Va. 29 before returning to westbound I-66.

State police that at the 47-mile marker in Fairfax County, troopers and Prince William County police were able to encircle and contain Gibson, and force the vehicle he was in onto the shoulder.

Police said Gibson then ran from the vehicle and jumped into the bed of a pickup truck that was stopped in the westbound lanes of I-66, grabbed a shovel and started swinging it at the troopers as they approached him. Police said Gibson finally complied with the troopers' verbal commands to drop the shovel, but then jumped out of the back of the pickup truck and climbed over the cement Jersey barrier.

In the left shoulder of the eastbound lanes of I-66, police said Gibson refused to be taken into custody and “fought the trooper and sergeant” during the course of the apprehension. Both the trooper and sergeant suffered minor injuries, police said.

Gibson was transported by Prince William police to the Prince William County Adult Detention Center, where he is being detained without bond.

Gibson has been charged with the following: one count of grand larceny, one count of carjacking, one felony count of eluding police, two counts of malicious wounding, two counts of destruction of property and six counts of felony assault on a police officer.

According to court records, he will be arraigned on May 3 in Prince William General District Court.